Product comparison · 2 internal hard drives

Seagate 146GB SAS vs Seagate Constellation ST33000651SS internal hard drive

Key differences

HDD capacity
- 146GB SAS:146 GB
- Constellation ST33000651SS internal hard drive:3 TB
HDD speed
- 146GB SAS:15000 RPM
- Constellation ST33000651SS internal hard drive:7200 RPM
HDD size
- 146GB SAS:2.5"
- Constellation ST33000651SS internal hard drive:3.5"
Interface
- 146GB SAS:SAS
- Constellation ST33000651SS internal hard drive:Serial ATA
Read seek time
- 146GB SAS:2.7 ms
- Constellation ST33000651SS internal hard drive:8.5 ms
Write seek time
- 146GB SAS:3.1 ms
- Constellation ST33000651SS internal hard drive:9.5 ms
Average latency
- 146GB SAS:2 ms
- Constellation ST33000651SS internal hard drive:4.16 ms
Mean time between failures (MTBF)
- 146GB SAS:2000000 h
- Constellation ST33000651SS internal hard drive:1200000 h

Differences highlightedShow differences only

Comparison of 146GB SAS, ST33000651SS
27 specifications	A Seagate 146GB SAS View product	B Seagate Constellation ST33000651SS internal hard drive Model ST33000651SS View product
Features8 differ
HDD capacityDiffers	146 GB	3 TB
HDD speedDiffers	15000 RPM	7200 RPM
HDD sizeDiffers	2.5"	3.5"
InterfaceDiffers	SAS	Serial ATA
Component forKnown for one	Server/workstation	Unknown — not stated by the source
Storage drive buffer size	64 MB	64 MB
HDD number of headsKnown for one	2	Unknown — not stated by the source
Read seek timeDiffers	2.7 ms	8.5 ms
Write seek timeDiffers	3.1 ms	9.5 ms
Average latencyDiffers	2 ms	4.16 ms
Mean time between failures (MTBF)Differs	2000000 h	1200000 h
Power2 differ
Power consumption (idle)Known for one	3.84 W	Unknown — not stated by the source
Operating voltageDiffers	5 V	5 / 12 V
Start-up currentDiffers	0.86 A	2.04 A
Power consumption (typical)Known for one	Unknown — not stated by the source	10.68 W
Operational conditions1 differ
Operating temperature (T-T)Differs	5 - 55 °C	5 - 60 °C
Storage temperature (T-T)	-40 - 70 °C	-40 - 70 °C
Operating shockKnown for one	60 G	Unknown — not stated by the source
Non-operating shockKnown for one	300 G	Unknown — not stated by the source
Weight & dimensions4 differ
WidthDiffers	70.1 mm	101.8 mm
DepthDiffers	100.5 mm	147 mm
HeightDiffers	15 mm	26.1 mm
WeightDiffers	193 g	700 g
Other featuresidentical
Data transfer rate	6 Gbit/s	6 Gbit/s
Internal	Yes	Yes
Sustained data rateKnown for one	202 MB/s	Unknown — not stated by the source
Acoustic pressure emissionsKnown for one	3.35 dB	Unknown — not stated by the source

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.